<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>login</title>
</head>

<body>
    <input type="text" id="username">
    <input type="password" id="password">
    <button onclick="login()">login</button>
</body>

</html>